Honest heat pump pricing — Edinburgh & the Lothians
How much does an air source heat pump actually cost in Edinburgh?
Most Edinburgh and Lothians homes fall between £10,000 and £16,000 installed, before any Home Energy Scotland grant and interest-free loan. Eligible Scottish homeowners can apply HES funding to bring the net cost down significantly. This page breaks down what drives the price, what running costs look like against gas, and when a heat pump honestly isn't worth the money — because that matters too.
Typical prices by property size
Every home is different and every quote we give is fixed, written, and based on a real survey — but these are the honest ranges we see for domestic air source heat pump installations across Edinburgh and the Lothians.
| Property | Installed price | Indicative net after HES grant* |
|---|---|---|
Small home (1–2 bed flat, small terrace) Smaller heat loss, less radiator upgrade work, simpler outdoor unit siting. | £9,000 – £12,000 | £1,500 – £4,500 |
Mid-size home (3-bed semi, standard family home) The most common Edinburgh and Lothians install. Usually a handful of radiator upgrades plus a new cylinder. | £11,000 – £14,000 | £3,500 – £6,500 |
Larger home (4-bed detached, larger heat loss) Bigger heat pump, more radiators upgraded, sometimes twin cylinders or buffer tanks. | £13,000 – £16,000 | £5,500 – £8,500 |
Off-grid or complex retrofit (rural, LPG/oil replacement) Longest payback for running costs — these homes usually see the biggest savings vs oil or LPG. | £14,000 – £18,000+ | £6,500 – £10,500+ |
*Indicative net figures assume the full Home Energy Scotland heat pump grant (currently up to £7,500 for a first-time MCS-certified install, subject to eligibility and current scheme rules). Rural and island properties may qualify for an uplift. An interest-free Home Energy Scotland loan is available on top of the grant to help cover the remaining cost. Replacement heat pumps are not grant-eligible — loan support may still apply. Figures are indicative only and confirmed in a fixed written quote after survey.
What actually drives the price up or down
Six practical things make the biggest difference between a £10,000 quote and a £16,000 quote for the same basic service. Here they are, in plain language.
Heat pump size and brand
A correctly sized unit for a modest semi is cheaper than one sized for a 4-bed detached. We don't oversize — an oversized heat pump costs more upfront, cycles more often, and is less efficient to run.
Radiator upgrades
Heat pumps run at lower flow temperatures (35–50°C) than gas boilers, so some radiators may need upsizing to deliver the same heat. We only change the radiators that actually need changing — not the whole house.
Hot water cylinder
A heat-pump-compatible cylinder is part of almost every install. If you already have a decent unvented cylinder it may be reusable, but most jobs include a new one.
Pipework and location
If the outdoor unit can sit near an external wall close to the utility area, pipework runs are short and costs are lower. Longer runs and awkward routing add cost.
Controls and zoning
A properly tuned weather compensation control is essential. Zoning, smart thermostats, and multi-zone setups add to the price but can pay back in running costs.
Survey, design, and MCS certification
A proper heat loss calculation and MCS system design is non-negotiable — it's what makes the system actually work, and it's required for Home Energy Scotland funding. The MCS side is handled under our partner JME Green Energy's certification.
Home Energy Scotland funding
How Home Energy Scotland grant and loan funding works in practice
Scottish heat pump funding is run by Home Energy Scotland — funded by the Scottish Government and administered by the Energy Saving Trust. The UK Boiler Upgrade Scheme does not apply in Scotland. Eligible Scottish homeowners can access a grant toward an MCS-certified heat pump install, plus an interest-free loan on top for remaining costs.
We complete a free home survey and give you a fixed-price quote alongside an honest view of Home Energy Scotland eligibility.
The install is delivered in partnership with JME Green Energy, who hold the MCS certification Home Energy Scotland requires. JME supports the HES application under their MCS registration.
Once Home Energy Scotland confirms your grant and any interest-free loan, we schedule the install. The net position is clear before the work starts.
We complete the install. JME finalises the MCS and Home Energy Scotland paperwork and hands over the certification.
Honest caveat. Home Energy Scotland eligibility depends on the property, the energy report outcome, whether it's a first-time install or a replacement, and current scheme rules — amounts and eligibility change, and HES has final say. We walk you through it at the survey but we won't promise an outcome that isn't ours to give. We do not claim Macara Heating is itself MCS-certified; the MCS certification is held by JME Green Energy, which is exactly what Home Energy Scotland requires.
Running cost vs a gas boiler — the honest comparison
A properly designed heat pump in a reasonably insulated Edinburgh home is usually cheaper to run than a new A-rated gas boiler, and significantly cheaper than an old G-rated one. The savings are much larger if you're replacing oil or LPG. These are rough annual heating-and-hot-water figures for a typical 3-bed semi.
| Heating | Est. annual cost |
|---|---|
Old gas boiler (70% efficient) Typical Edinburgh 3-bed semi on current unit rates. | £1,800 – £2,400 |
New A-rated gas boiler (90%+ efficient) Well-installed modern combi or system boiler. | £1,400 – £1,900 |
Air source heat pump (properly designed) Running at a seasonal COP of ~3.2–3.8 with tuned controls. | £1,100 – £1,700 |
Heat pump + solar PV (self-consumption) Meaningful self-consumption on sunny days knocks the running cost down further. | £600 – £1,200 |
Oil or LPG boiler (for comparison) Biggest running-cost win when switching to a heat pump. | £2,000 – £3,200 |
Where the savings come from
A heat pump doesn't burn fuel to make heat — it moves heat from outside air into the home. A seasonal coefficient of performance (SCOP) of 3.5 means roughly 3.5 kWh of heat per 1 kWh of electricity. That's why a properly designed system can run cheaper than gas even at current unit rates, and much cheaper in homes with solar PV.
When a heat pump honestly isn't worth the money
We install heat pumps and gas boilers, so we've no reason to push one over the other. There are homes and situations where a heat pump is the wrong call today — and telling you that is part of the job.
- The property is very draughty or poorly insulated, and fabric improvements aren't on the cards soon. Running costs won't work out and comfort will suffer.
- You're planning to move within a couple of years — the payback period on the upfront cost won't catch up with you.
- There's no suitable space for an outdoor unit or a hot water cylinder, and no workable alternative.
- The property is listed or in a conservation area with planning restrictions that make a heat pump impractical.
- Your existing gas boiler is under five years old and running well — in that case, waiting until the boiler's natural end of life is usually the more honest call.
In any of these situations, a new high-efficiency gas boiler today — with a heat pump revisited later once the property is ready — is often the more honest recommendation. See our boiler installation page for the alternative route, or read heat pump vs new boiler for the full trade-off.
Heat pump cost — short answers
How much does an air source heat pump cost in Edinburgh after Home Energy Scotland funding?
For most Edinburgh and Lothians homes, an air source heat pump costs £10,000 to £16,000 installed. Eligible Scottish homeowners can access a Home Energy Scotland grant toward the install plus an interest-free loan on top for remaining costs. The net position depends on property size, radiator upgrades, system complexity, and current HES grant and loan amounts — which we confirm at the survey rather than publishing figures that might go stale. The funding runs through our partner JME Green Energy's MCS certification.
Is a heat pump cheaper to run than a gas boiler in Scotland?
For a well-designed system in a reasonably insulated home, yes — typically 10–25% cheaper to run than a new A-rated gas boiler, and 30–50% cheaper than an old G-rated boiler. The saving is much bigger if you're replacing oil or LPG, and bigger still if you have solar PV. For a draughty, uninsulated home with poorly sized radiators, the numbers can go the other way, which is why the survey matters.
Do I pay the full price and claim Home Energy Scotland funding back?
No. Home Energy Scotland funding is applied for and approved before the work starts, so you know the grant and any interest-free loan position before committing to the install. The MCS paperwork runs through our partner JME Green Energy, and we confirm the net position in a fixed written quote. You're never asked to pay the gross price upfront and chase it back.
Is finance available on the net price?
We can discuss staged payments and finance options on heat pump projects at the quote stage. The exact structure depends on the project size and the net price after grant. We'll walk you through it honestly — no pressure, no small-print surprises.
When is a heat pump not worth the money?
When the home is very draughty or poorly insulated, or when the homeowner is planning to move within a couple of years. In both cases a new high-efficiency gas boiler is often the more honest call — and we'd tell you that at the survey rather than sell you a heat pump that won't perform or pay back.
Want a real number for your home?
Book a free home survey. We'll do a proper heat loss calculation, check the radiators, review Home Energy Scotland grant and loan eligibility, and give you a fixed written price — no sales pressure, no bait figures.